S
M
T
W
T
F
S
30
93°
70°
31
95°
71°
1
95°
71°
2
94°
70°
3
95°
71°
4
94°
71°
5
94°
70°
6
95°
69°
7
95°
63°
8
85°
63°
9
85°
67°
10
90°
67°
11
91°
66°
12
92°
65°
13
88°
66°
14
92°
68°
15
91°
59°
16
91°
58°
17
83°
58°
18
81°
60°
19
81°
56°
20
82°
55°
21
80°
55°
22
79°
54°
23
80°
55°
24
81°
56°
25
81°
60°
26
82°
60°
27
86°
63°
28
86°
64°
29
87°
59°
30
85°
60°
1
78°
58°
2
84°
53°
3
78°
58°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Newport
Newport's September 2026 forecast shows daily high temperatures ranging from 78° to 95°, with overnight lows between 53° and 71°. The average high for September is 87° with an average low of 63°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how September weather will actually feel in Newport. See also: October | November | December.